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1. 发明申请

US20120131293A1 DATA ARCHIVING USING DATA COMPRESSION OF A FLASH COPY 有权
标题翻译：使用闪存拷贝数据压缩的数据存档
公开(公告)号：US20120131293A1
公开(公告)日：2012-05-24
申请号：US12950992
申请日：2010-11-19
申请人： Michael Thomas Benhase , Lokesh Mohan Gupta , Yu-Cheng Hsu , Alfred Emilio Sanchez
发明人： Michael Thomas Benhase , Lokesh Mohan Gupta , Yu-Cheng Hsu , Alfred Emilio Sanchez
IPC分类号： G06F12/16 , G06F12/00
CPC分类号： G06F3/065 , G06F11/1076 , G06F2211/1014
摘要： Embodiments of the disclosure relate to archiving data in a storage system. An exemplary embodiment comprises making a flash copy of data in a source volume, compressing data in the flash copy wherein each track of data is compressed into a set of data pages, and storing the compressed data pages in a target volume. Data extents for the target volume may be allocated from a pool of compressed data extents. After each stride worth of data is compressed and stored in the target volume, data may be destaged to avoid destage penalties. Data from the target volume may be decompressed from a flash copy of the target volume in a reverse process to restore each data track, when the archived data is needed. Data may be compressed and uncompressed using a Lempel-Ziv-Welch process.
摘要翻译：本公开的实施例涉及在存储系统中归档数据。示例性实施例包括在源卷中进行数据的闪速复制，压缩闪存中的数据，其中数据的每个轨道被压缩成一组数据页，并将压缩的数据页存储在目标卷中。可以从压缩数据盘区池中分配目标卷的数据盘区。在每一步数据的数据被压缩并存储在目标卷中之后，数据可能会被排除以避免流失的惩罚。当需要归档数据时，目标卷的数据可以以相反的过程从目标卷的闪存副本中解压缩，以恢复每个数据轨道。数据可以使用Lempel-Ziv-Welch进程进行压缩和解压缩。

2. 发明授权

US08918607B2 Data archiving using data compression of a flash copy 有权
公开(公告)号：US08918607B2
公开(公告)日：2014-12-23
申请号：US12950992
申请日：2010-11-19
申请人： Michael Thomas Benhase , Lokesh Mohan Gupta , Yu-Cheng Hsu , Alfred Emilio Sanchez
发明人： Michael Thomas Benhase , Lokesh Mohan Gupta , Yu-Cheng Hsu , Alfred Emilio Sanchez
IPC分类号： G06F12/16 , G06F3/06 , G06F11/10
CPC分类号： G06F3/065 , G06F11/1076 , G06F2211/1014
摘要： Embodiments of the disclosure relate to archiving data in a storage system. An exemplary embodiment comprises making a flash copy of data in a source volume, compressing data in the flash copy wherein each track of data is compressed into a set of data pages, and storing the compressed data pages in a target volume. Data extents for the target volume may be allocated from a pool of compressed data extents. After each stride worth of data is compressed and stored in the target volume, data may be destaged to avoid destage penalties. Data from the target volume may be decompressed from a flash copy of the target volume in a reverse process to restore each data track, when the archived data is needed. Data may be compressed and uncompressed using a Lempel-Ziv-Welch process.

3. 发明授权

US07975169B2 Memory preserved cache to prevent data loss 失效
标题翻译：内存保存缓存以防止数据丢失
公开(公告)号：US07975169B2
公开(公告)日：2011-07-05
申请号：US12132087
申请日：2008-06-03
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F11/00
CPC分类号： G06F12/0804 , G06F11/1441 , G06F11/1666 , G06F11/2023 , G06F11/2038 , G06F11/2043 , G06F12/0866
摘要： A method, system, and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster is provided. A memory preserved indicator is initiated to mark tracks on a cache of the surviving cluster to be preserved, the tracks having an image in an NVS of the failed cluster. A destage operation is performed to destage the marked tracks. Subsequent to a determination that each of the marked tracks have been destaged, the memory preserved indicator is disabled to remove the mark from the tracks. If the surviving cluster reboots previous to each of the marked tracks having been destaged, the cache is verified as a memory preserved cache, the marked tracks are retained for processing while all unmarked tracks are removed, and the marked tracks are processed.
摘要翻译：提供了一种用于通过从故障集群到存活集群的故障转移来保存具有双缓存和双非易失性存储（NVS）的存储子系统中的数据的方法，系统和计算机程序产品。启动存储器保存的指示符以标记要保留的存活簇的高速缓存上的轨道，轨道在故障集群的NVS中具有图像。执行了一个停船操作，以排除标记的轨迹。在确定每个标记的轨道已经停止之后，禁用存储器保留指示符以从轨道中移除标记。如果幸存的群集在已经去往每个标记的轨道之前重新启动，则将高速缓存验证为存储器保存的高速缓存，标记的轨道被保留用于处理，而所有未标记的轨道被移除，并且标记的轨道被处理。

4. 发明授权

US07895465B2 Memory preserved cache failsafe reboot mechanism 失效
标题翻译：内存保存缓存失效安全重启机制
公开(公告)号：US07895465B2
公开(公告)日：2011-02-22
申请号：US12132128
申请日：2008-06-03
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F11/00
CPC分类号： G06F11/1417 , G06F11/2092
摘要： A method, system and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster, the surviving cluster undergoing a rebooting process, is provided. A memory preserved indicator associated with a cache of the surviving cluster is detected. The memory preserved indicator designates marked tracks having an image in an NVS of the failed cluster to be preserved through the rebooting process. A counter in a data structure of the surviving cache is incremented. If a value of the counter exceeds a predetermined value, a cache memory is initialized, and the marked tracks are removed from the cache to prevent an instance of repetitive reboots caused by a corrupted structure in the cache memory.
摘要翻译：提供了一种方法，系统和计算机程序产品，用于通过从故障集群到存活集群的故障转移来保存具有双高速缓存和双非易失性存储（NVS）的存储子系统中的数据，所述经历重新启动过程的存活集群。检测与存活簇的高速缓存相关联的存储器保存的指示符。存储器保存的指示符指定在通过重新启动过程保留的故障集群的NVS中具有图像的标记轨迹。幸存缓存的数据结构中的计数器增加。如果计数器的值超过预定值，则初始化高速缓冲存储器，并且从高速缓存中移除标记的轨道，以防止由高速缓冲存储器中的破坏的结构导致的重复重新启动的实例。

5. 发明申请

US20090300408A1 MEMORY PRESERVED CACHE FAILSAFE REBOOT MECHANISM 失效
标题翻译：内存保存缓存失败机制
公开(公告)号：US20090300408A1
公开(公告)日：2009-12-03
申请号：US12132128
申请日：2008-06-03
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F11/20
CPC分类号： G06F11/1417 , G06F11/2092
摘要： A method, system and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster, the surviving cluster undergoing a rebooting process, is provided. A memory preserved indicator associated with a cache of the surviving cluster is detected. The memory preserved indicator designates marked tracks having an image in an NVS of the failed cluster to be preserved through the rebooting process. A counter in a data structure of the surviving cache is incremented. If a value of the counter exceeds a predetermined value, a cache memory is initialized, and the marked tracks are removed from the cache to prevent an instance of repetitive reboots caused by a corrupted structure in the cache memory.
摘要翻译：提供了一种方法，系统和计算机程序产品，用于通过从故障集群到存活集群的故障转移来保存具有双高速缓存和双非易失性存储（NVS）的存储子系统中的数据，所述存活集群经历重新启动过程。检测与存活簇的高速缓存相关联的存储器保存的指示符。存储器保存的指示符指定在通过重新启动过程保留的故障集群的NVS中具有图像的标记轨迹。幸存缓存的数据结构中的计数器增加。如果计数器的值超过预定值，则初始化高速缓冲存储器，并且从高速缓存中移除标记的轨道，以防止由高速缓冲存储器中的破坏的结构导致的重复重新启动的实例。

6. 发明申请

US20090300298A1 MEMORY PRESERVED CACHE TO PREVENT DATA LOSS 失效
标题翻译：内存保存缓存以防数据丢失
公开(公告)号：US20090300298A1
公开(公告)日：2009-12-03
申请号：US12132087
申请日：2008-06-03
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F12/00
CPC分类号： G06F12/0804 , G06F11/1441 , G06F11/1666 , G06F11/2023 , G06F11/2038 , G06F11/2043 , G06F12/0866
摘要： A method, system, and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster is provided. A memory preserved indicator is initiated to mark tracks on a cache of the surviving cluster to be preserved, the tracks having an image in an NVS of the failed cluster. A destage operation is performed to destage the marked tracks. Subsequent to a determination that each of the marked tracks have been destaged, the memory preserved indicator is disabled to remove the mark from the tracks. If the surviving cluster reboots previous to each of the marked tracks having been destaged, the cache is verified as a memory preserved cache, the marked tracks are retained for processing while all unmarked tracks are removed, and the marked tracks are processed.
摘要翻译：提供了一种用于通过从故障集群到存活集群的故障转移来保存具有双缓存和双非易失性存储（NVS）的存储子系统中的数据的方法，系统和计算机程序产品。启动存储器保存的指示符以标记要保留的存活簇的高速缓存上的轨道，轨道在故障集群的NVS中具有图像。执行了一个停船操作，以排除标记的轨迹。在确定每个标记的轨道已经停止之后，禁用存储器保留指示符以从轨道中移除标记。如果幸存的群集在已经去往每个标记的轨道之前重新启动，则将高速缓存验证为存储器保存的高速缓存，标记的轨道被保留用于处理，而所有未标记的轨道被移除，并且标记的轨道被处理。

7. 发明授权

US08095738B2 Differential caching mechanism based on media I/O speed 有权
标题翻译：基于媒体I / O速度的差分缓存机制
公开(公告)号：US08095738B2
公开(公告)日：2012-01-10
申请号：US12484963
申请日：2009-06-15
申请人： Michael Thomas Benhase , Lawrence Yiumchee Chiu , Lokesh Mohan Gupta , Yu-Cheng Hsu
发明人： Michael Thomas Benhase , Lawrence Yiumchee Chiu , Lokesh Mohan Gupta , Yu-Cheng Hsu
IPC分类号： G06F12/00
CPC分类号： G06F12/0873 , G06F12/0868 , G06F12/0871 , G06F12/121 , G06F2212/261
摘要： A method for allocating space in a cache based on media I/O speed is disclosed herein. In certain embodiments, such a method may include storing, in a read cache, cache entries associated with faster-responding storage devices and cache entries associated with slower-responding storage devices. The method may further include implementing an eviction policy in the read cache. This eviction policy may include demoting, from the read cache, the cache entries of faster-responding storage devices faster than the cache entries of slower-responding storage devices, all other variables being equal. In certain embodiments, the eviction policy may further include demoting, from the read cache, cache entries having a lower read-hit ratio faster than cache entries having a higher read-hit ratio, all other variables being equal. A corresponding computer program product and apparatus are also disclosed and claimed herein.
摘要翻译：本文公开了一种基于媒体I / O速度在高速缓存中分配空间的方法。在某些实施例中，这种方法可以包括在读取缓存中存储与更快响应的存储设备相关联的高速缓存条目以及与较慢响应的存储设备相关联的高速缓存条目。该方法还可以包括在读取高速缓存中实现逐出策略。这种驱逐策略可以包括从读取的缓存降低响应较快的存储设备的高速缓存条目比缓慢响应的存储设备的缓存条目更快，所有其他变量相等。在某些实施例中，驱逐策略还可以包括从读取的缓存降级具有比具有较高读取命中率的高速缓存条目更低的读命中率的高速缓存条目，所有其他变量相等。本文还公开并要求相应的计算机程序产品和装置。

8. 发明授权

US07761680B2 Copying data from a first cluster to a second cluster to reassign storage areas from the first cluster to the second cluster 有权
标题翻译：将数据从第一个集群复制到第二个集群，以将存储区域从第一个集群重新分配到第二个集群
公开(公告)号：US07761680B2
公开(公告)日：2010-07-20
申请号：US11696099
申请日：2007-04-03
申请人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F12/00
CPC分类号： G06F12/0873 , G06F11/2033 , G06F11/2046 , G06F11/2097 , G06F2212/284
摘要： Provided are a method, system, and article of manufacture for copying data from a first cluster to a second cluster to reassign storage areas from the first cluster to the second cluster. An operation is initiated to reassign storage areas from a first cluster to a second cluster, wherein the first cluster includes a first cache and a first storage unit and the second cluster includes a second cache and a second storage unit. Data in the first cache for the storage areas to reassign to the second cluster is copied to the second cache. Data in the first storage unit for storage areas remaining assigned to the first cluster is copied to the second storage unit.
摘要翻译：提供了用于将数据从第一集群复制到第二集群的方法，系统和制品，以将从第一集群到第二集群的存储区域重新分配。启动操作以将存储区域从第一集群重新分配到第二集群，其中第一集群包括第一高速缓存和第一存储单元，并且第二集群包括第二高速缓存和第二存储单元。将第一个缓存中的数据重新分配给第二个集群的存储区域复制到第二个缓存。第一存储单元中的剩余分配给第一集群的存储区域的数据被复制到第二存储单元。

9. 发明授权

US07680982B2 Preservation of cache data following failover 有权
标题翻译：故障转移后保存缓存数据
公开(公告)号：US07680982B2
公开(公告)日：2010-03-16
申请号：US11676634
申请日：2007-02-20
申请人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F12/00
CPC分类号： G06F12/0804 , G06F11/1666 , G06F11/2092 , G06F12/0866
摘要： In a data storage subsystem with disk storage and a pair of clusters, one set of DASD fast write data is in cache of one cluster and in non-volatile data storage of the other. In response to a failover of one of the pair of clusters to a local cluster, the local cluster converts the DASD fast write data in local cache to converted fast write data to prioritize the converted data for destaging to disk storage. In response to failure to destage, the local cluster allocates local non-volatile storage tracks and emulates a host adapter to store the converted fast write data by the local non-volatile storage, reconverting the converted fast write data of the non-volatile storage to local DASD fast write data stored in the local non-volatile storage and stored in the local cache storage.
摘要翻译：在具有磁盘存储和一对集群的数据存储子系统中，一组DASD快速写入数据位于一个集群的缓存中，而在另一个集群的非易失性数据存储中。为了响应一对集群中的一个到本地集群的故障切换，本地集群将本地缓存中的DASD快速写入数据转换为转换的快速写入数据，以便将转换后的数据优先转发到磁盘存储。为了应对未能到达的目的地，本地集群分配本地非易失性存储轨迹，并模拟主机适配器以存储由本地非易失性存储器转换的快速写入数据，将非易失性存储器的转换的快速写入数据重新转换为本地DASD快速写入数据存储在本地非易失性存储器中并存储在本地缓存中。

10. 发明申请

US20080250210A1 COPYING DATA FROM A FIRST CLUSTER TO A SECOND CLUSTER TO REASSIGN STORAGE AREAS FROM THE FIRST CLUSTER TO THE SECOND CLUSTER 有权
标题翻译：将数据从第一集群复制到第二集群以将存储区域从第一集群转发到第二集群
公开(公告)号：US20080250210A1
公开(公告)日：2008-10-09
申请号：US11696099
申请日：2007-04-03
申请人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F12/00
CPC分类号： G06F12/0873 , G06F11/2033 , G06F11/2046 , G06F11/2097 , G06F2212/284
摘要： Provided are a method, system, and article of manufacture for copying data from a first cluster to a second cluster to reassign storage areas from the first cluster to the second cluster. An operation is initiated to reassign storage areas from a first cluster to a second cluster, wherein the first cluster includes a first cache and a first storage unit and the second cluster includes a second cache and a second storage unit. Data in the first cache for the storage areas to reassign to the second cluster is copied to the second cache. Data in the first storage unit for storage areas remaining assigned to the first cluster is copied to the second storage unit.
摘要翻译：提供了用于将数据从第一集群复制到第二集群的方法，系统和制品，以将从第一集群到第二集群的存储区域重新分配。启动操作以将存储区域从第一集群重新分配到第二集群，其中第一集群包括第一高速缓存和第一存储单元，并且第二集群包括第二高速缓存和第二存储单元。将第一个缓存中的数据重新分配给第二个集群的存储区域复制到第二个缓存。第一存储单元中的剩余分配给第一集群的存储区域的数据被复制到第二存储单元。

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